Steps to reproduce:

Find a Windows 2003 machine (x86) without Service Pack 1 installed.

Run Bigapps vtest, see test procedure document:

http://jqa.ireland/procedures/test_procedures/all_test_procedures/BigApps.html

After a couple of hours running an EXCEPTION_ACCESS_VIOLATION GUI appears and an error log is created. See attached log.

This only occurs when SP1 is NOT installed but some of our customers may not have SP1 so this CR is being created as a reference.
Further Investigation:

1.4.2-b28 - error doesnt occur
1.4.2_06 - error doesnt occur
1.4.2_07 - error doesnt occur
1.4.2_08 - error occurs
1.4.2_11b6 - error occurs

Looks like this only started happening from 1.4.2_08 onwards.